Sleeper anchor



July 24, 1928. 1,677,882

' s. B. Bosco SLEEPER ANCHOR Filed Jan. 19, 1928 Patented July 24, 1923.

warren STATES GEORGE B. BOSCO,*'OF CHICAGO, ILLINOIS.

SLEEPER ANCHOR.

Application filed January 19, 1928.

The main objects of this invention are to provide an improved form of sleeper anchor particularly adapted for use in concrete construction work; to provide a sleeper-anchor which may be readily driven into a concrete slab before the material has hardened; to provide improved fastening means adapted for attachment to the sleeper; and to provide a sleeper anchor of this kind which is inexpensive and durable and which may be used in connection with sleepers of various sizes.

An illustrative embodiment of this invention is shown in the accompanying drawing, wherein Figure 1 is a vertical section of a floor construction showing an improved anchor for securing a sleeper to the slab, parts being shown in dotted outline.

Fig. 2 is a side elevation of the anchor, showing the bearing plate bent at right angles to the prong.

Fig. 3 is an elevation taken from the left of Fig. 2.

Fig. lis a perspective of the anchor, showing the bearing plate in its elevated position for attachment to the sleeper.

In the form shown, the anchors areused for securing wooden sleepers 1 to a concrete slab 2. The sleepers are usually ar ranged in substantially parallel spaced relation to one another so as to provide a wooden 7 frame structure for supporting the floor boards as is well understood in the art.

The common forms of sleeper anchors heretofore in use included a supporting member 0r seat portion on which the sleeper was directlysupported. Located on both sides of the seat, were arms which defined the seat and which also were adapted for attachment to respectively opposite sides of the sleeper. Such prior anchors were objectionable for the reason that the sleepers varied in thickness and, therefore, it was necessary to provide anchors of various sizes.

The improved. anchor herein shown comprises a prong adapted to be driven into the slab and a bearing plate adapted for attache ment to only one side of the sleeper, so that the anchor may be made in only one'size for use in connection with all the different sizes of sleepers.

The anchor is preferably a sheet metal stamping which is formed at one end to provide a prong 3 having a tapered end 4 adapted to be driven into the concrete before the Serial No. 247,892.

concrete has hardened. Struck out from the prong 3,.is a lug 5 which is arranged so as to secure the anchor against removal after the concrete has set.

The lateral edges of the prong 3 are bent at substantially right angles to the plane of the prong to provide a pair of substantially parallel flanges 6, which are tapered as shown at 7 adjacent the end 4 so as to facilitate the insertion of the prong intothe con crete.

Formed at the upper end of the anchor, is a bearing plate 8 normally located in the plane of the prong 3, so as to be adapted to abut against one side of the sleeper. Formed in the plate 8, are apertures 9 for receiving nails 10, whereby the anchor is secured to the sleeper.

The bearing plate 8 is arranged so as to be adapted to be bent at substantially right angles to the prong 3 to form a head which abuts against theshoulders 11 formed by the upper ends of the flanges 6.

In operation after the concrete has been poured, the anchors are placed in the desired positions on the slab. The prongs 3 may be driven into the slab either bv the pressure of the users foot or by means of a hammer or similar tool. The head 8 serves to receive the blows of the hammer and also forms a stop to prevent the prong from being driven beyond the desired depth. The shoulders 1.1 brace the plate 8 to secure the latter against bending beyond its horizontal position.

After the concrete has set, the plates 8 are bent upwardly to the vertical position and are nailed to the sleepers. lVith this improved form and arrangement of parts, several of the anchors may be arranged on one side of a sleeper, or they may be staggered so as to position some anchors on each side of a sleeper. If desired, the anchors may also be arranged in pairs.

.Although but one specific embodiment of this invention has been herein shown and described, it will be understood that details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims.

I claim 1. A sheet metalsleeper anchor comprising a prong adapted to be driven into a support, a substantially flat bearing plate on one end of said prong normally located substantially in the plane of said prong for attachment to a sleeper, said bearing plate being adapted to be bent at substantially right angles to said prong to provide a head for engaging the surface of the support to limit the inward movement of said prong, and a shoulder on said prong adjacent saidone end adapted to secure said bearing plate against bending beyond said right angle position.

2. A sheet metal sleeper anchor comprising a prong adapted to be driven into a support, and a substantially flat bearing plate on one end of said prong normally located substantially in the plane of said prong for attachment to a sleeper, saidubearing plate being adapted to be bent at substantially right angles to said prong to provide a head for engaging the surface of the support to limit the inward movement of said prong, one of the lateral edges of said prong being bent to form a flange adapted to engage said bearing plate when the latter is disposed at right angles to said prong.

3. A sheet metal sleeper anchor comprising a prong adapted to be driven into a support, and a substantially flat bearing plate on one end of said prong normally located substantially in the plane of said prong for attachment to a sleeper, said bearing plate being adapted to be bent at substantially right angles to said prong to provide a head for engaging the surface of the support to limit the inward movement of said prong, the lateral edges of said prong being bent to provide a pair of spaced flanges for limiting the bending of said bearing plate.

4. A sheet metal sleeper anchor comprising a prong adapted to be driven into a supflat bearing plate on one end of said prong V normally located substantially in the plane of said prong for attachment to a sleeper, said bearing plate being adapted to be bent at substantially right angles to said prong to provide a head for engaging the surface of the support to limit the inward movement of said prong.

5, A sleeper anchor comprising a metal sheet having one end'formed to provide a prong adapted to be driven into a support, a lug struck out from the plane of said prong for securing the anchor against removal from the support, a pair of spaced flanges on the lateral edges of said prong, and a bearing plate adjacent the other end of said sheet adapted for attachment to a sleeper, said bearing plate being adapted to be bent at substantially right angles to said prong.

'6. The combination with a concrete slab, of a sleeper anchor comprising a prong adapted to be embedded in the, slab, a lug struck out from said prong for securing the anchor against removal from the slab, the lateral edges of said prong being bent to form a pair of spaced flanges, and a bearing plate on one end of said prong adapted for attachment to a sleeper, said bearing plate being adaptedto bent at substantially right angles to said prong for engagement With the surface of the slab. I

Signed at Chicago this 17th day of January, 1928.

GEORGE B. BOSCO 

